<?xml version= "1.0" encoding= "utf-8" ?>
<animated-selector xmlns:android= "http://schemas.android.com/apk/res/android" >
    <item
        android:id= "@+id/play"
        android:drawable= "@drawable/circle_play_vector"
        android:state_checked= "true" />
    <item
        android:id= "@+id/paused"
        android:drawable= "@drawable/circle_pause_vector"
        android:state_checked= "false" />
    <transition
        android:drawable= "@drawable/pause_to_play"
        android:fromId= "@id/paused"
        android:toId= "@id/play" />
    <transition
        android:drawable= "@drawable/play_to_pause"
        android:fromId= "@id/play"
        android:toId= "@id/paused" />
</animated-selector>